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zmey [24]
3 years ago
8

Five hats and three scarves cost $99. While three hats and five scarves cost

Mathematics
1 answer:
PtichkaEL [24]3 years ago
3 0

Answer:

x=15, y=8

15 hats and 8 scarves

Step-by-step explanation:

hats=x

scarves=y

5x+3y=99

3x+5y=85

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Prove that 25^11 - 5^19 is divisible by 31.
Stells [14]

Answer:

See below  

Step-by-step explanation:

                                        25¹¹ - 5¹⁹

Convert to base 5       = (5²)¹¹ - 5¹⁹

                                    =  5²²   - 5¹⁹

Factor out the GCF     =  5¹⁹(5³ - 1)

                                    =  5¹⁹(125 - 1)

                                    =  5¹⁹ × 124

                                    =  5¹⁹ × 4 × 31

31 is a factor of 25¹¹ - 5¹⁹, so the expression is divisible by 31.

7 0
3 years ago
It saids “About” so don’t give me a exact answer thank you .
Ratling [72]

Answer:

20

Step-by-step explanation:

$579/$28 = 20.67

it says about because this is a decimal and there's only whole numbers so it's 20 payments

6 0
3 years ago
Read 2 more answers
1.06 x 10^7 and 2.65 x 10^4
lora16 [44]

Answer:

4.0 x 10^2

Step-by-step explanation:

We are finding the quotient of the numbers in scientific notation. At first, we can write the quotient as

\frac{1.06~x~10^{7} }{2.06 ~x 10^{4} }

Let's try to rewrite the numbers in scientific notation. We can rewrite 1.06 x 10^7 into

1.06 ~x~10^{7}~ = 1060 ~x~10^{4}

which are the same. We can also rewrite 2.65 x 10^4 into

2.65~x ~10^{4} ~= 2.65~x~10^{2}

Now we have

\frac{1060~x10^{4} }{265~x~10^{2} }

1060 divided by 265 results to 4. And if we divide scientific notation, we just subtract the exponents on 10s. In this case, we have 4 and 2. 4-2 yields 2.

Hence, the final answer to this problem is

4.0~x~10^{2}

6 0
3 years ago
PLEASE HELP! I've been stuck on this question all day! ;w; NO links. Thanks in advance!
love history [14]
The height would be 6.5
7 0
3 years ago
Given the function h(x) = 4^x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.
Gennadij [26K]
Ooh, fun

the average rate of change is the slope

easy, so for section A, it would be the slope from (0,h(0)) to (1,h(1)) or from (0,1) to (1,4)
slope=(y2-y1)/(x2-x1)=(4-1)/(1-0)=3/1=3


section B, would be slope from (2,h(2)) to (3,h(3)) or from
(2,16) to (3,64)
slope=(y2-y1)/(x2-x1)=(64-16)/(3-2)=48/1=48


1. section A has an average rate of change of 3
section B has an average rate of change of 48



2. 48 is how many times greater than 3
48/3=16
16 times greater

it is because it is an exponential function and the slope grows bigger
4 0
4 years ago
Read 2 more answers
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